| Normal range†| RA (n = 45) | Non-RA (n = 21) | Erosions (n = 12) | No erosions (n = 54) |
---|---|---|---|---|---|
MMP-1 (ng/ml) | 0 | 4.0 ± 5.5 | 1.9 ± 2.7 | 7.1 ± 6.7* | 2.5 ± 4.0 |
MMP-2 (total; ng/ml) | 156-254 | 115 ± 50 | 112 ± 28 | 103 ± 25 | 116 ± 47 |
MMP-2 (active) | N/A | 15 ± 15 | 15 ± 14 | 10 ± 8 | 16 ± 13 |
MMP-9 (total; ng/ml) | 13-61 | 44 ± 32 | 49 ± 34 | 40 ± 35 | 46 ± 32 |
MMP-9 (active) | N/A | 2.3 ± 3.3 | 3.3 ± 3.6 | 2.8 ± 3.5 | 1.6 ± 3.3 |
TIMP-1 (μ g/ml) | 0.3-0.5 | 1.6 ± 0.7 | 2.0 ± 0.9 | 1.5 ± 0.6 | 1.7 ± 0.8 |
TIMP-2 (ng/ml) | 29-108 | 105 ± 166 | 72 ± 134 | 140 ± 168 | 85 ± 54 |
CRP (mg/dl) | <0.4 | 2.0 ± 3.9 | 2.2 ± 2.4 | 3.2 ± 3.2* | 1.9 ± 2.8 |